acknowledge >> /əkˈnɑlədʒ/
Definition: [verb] Accept or admit the existence or truth of.
Example: the plight of the refugees was acknowledged by the authorities
Definition: [verb] (of a body of opinion) recognize the fact or importance or quality of.
Example: the art world has begun to acknowledge his genius
Definition: [verb] Show that one has noticed or recognized (someone) by making a gesture or greeting.
Example: she refused to acknowledge my presence